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The Link field connects two tables. With a Link field, you can select records from another table in the current table and open the linked records when needed. Link fields are also required before you can use Lookup and Rollup fields.

Use Cases

Create and Configure

1

Choose the field type

In the current table, click add field and choose Link.
2

Choose the target table

In the configuration dialog, choose the table to link to, such as linking the orders table to the customers table.
3

Choose the link mode

Choose a one-way or two-way link as needed.
4

Configure relationship rules

Use Allow multiple selection and Allow duplicate values to configure one-to-one, one-to-many, many-to-one, or many-to-many relationships.

Relationship Types

Use Allow multiple selection and Allow duplicate values together to define four common relationship types:

Common Uses

  • CRM customer management: In a Companies table, create a link field to a Contacts table so one company can link to multiple contacts.
  • Project task assignment: In a Tasks table, create a link field to a Projects table so each task belongs to one project, while the project table can show related tasks.
  • Order line items: In an Orders table, link to a Products table, then use lookup fields to show prices and rollup fields to calculate order totals.

Notes

  • One-to-many limits: In a strict one-to-many relationship, when multiple selection is off on the Table B side, a Table B record linked by one Table A record cannot be selected by other Table A records. This works for data that should not be reused, such as ID numbers or employee profiles.
Link fields can only connect tables in the same Space. Lookup, Rollup, Conditional Lookup, and Conditional Rollup fields also need same-Space source data.
Last modified on May 26, 2026